Which one is correct?
The set on the left was just added to the shaker database; however, we found the set on the right which had been previously entered. Both sets are stamped "5F.5813" and the set on the left has a Napco sticker. In each set the hats are the shakers, whereas the heads are the egg cups.
Our bet is that the right set is correct and that the boy on the left goes with a girl more his age! Circa 1950s-60s.